diff --git a/karma.conf.js b/karma.conf.js
index 21ba0b4..01da75e 100644
--- a/karma.conf.js
+++ b/karma.conf.js
@@ -6,17 +6,16 @@ module.exports = function(config) {
     frameworks: [ 'mocha', 'sinon-chai' ],
 
     autoWatchBatchDelay: 400,
-    logLevel: config.LOG_ERROR,
 
     files: [
       'src/**/__tests__/*.js*'
     ],
 
     preprocessors: {
-      'src/**/__tests__/*.js*' : [ 'webpack' ]
+      'src/**/__tests__/*.js*' : ['webpack', 'sourcemap']
     },
 
-    reporters: [ 'nyan', 'coverage' ],
+    reporters: [ 'progress', 'coverage' ],
 
     coverageReporter: {
       type: 'html',
@@ -26,7 +25,6 @@ module.exports = function(config) {
 
     webpack: {
       devtool : 'inline-source-map',
-
       module: {
         loaders: [{
           test    : /\.jsx*$/,
diff --git a/package.json b/package.json
index 664813f..4ac9ad1 100644
--- a/package.json
+++ b/package.json
@@ -33,8 +33,8 @@
     "karma-coverage": "~0.3",
     "karma-firefox-launcher": "~0.1",
     "karma-mocha": "~0.1",
-    "karma-nyan-reporter": "~0.0",
     "karma-sinon-chai": "~0.3",
+    "karma-sourcemap-loader": "^0.3.4",
     "karma-webpack": "~1.5"
   },
   "dependencies": {
diff --git a/src/Foliage.js b/src/Foliage.js
index 506a748..9762c59 100644
--- a/src/Foliage.js
+++ b/src/Foliage.js
@@ -5,16 +5,18 @@
  * @param {Object} state - The initial state of the instance
  */
 
-let assoc  = require('./assoc')
-let dissoc = require('./dissoc')
-let getIn  = require('./get')
-let Diode  = require('diode')
+let assoc    = require('./assoc')
+let dissoc   = require('./dissoc')
+let getIn    = require('./get')
+let Diode    = require('diode')
+let keysOf   = require('./keys')
+let valuesOf = require('./values')
 
 function Foliage (state) {
   Diode(this)
 
-  this._path  = []
-  this._root  = this
+  this._path = []
+  this._root = this
 
   this.commit(state)
 }
@@ -73,16 +75,11 @@ Foliage.prototype = {
   },
 
   keys() {
-    return Object.keys(this.valueOf() || {})
+    return keysOf(this.valueOf())
   },
 
   values() {
-    // An anonymous function is used here instead of
-    // calling `this.get` directly because we have no
-    // fallback value.
-    return this.keys().map(function(key) {
-      return this.get(key)
-    }, this)
+    return valuesOf(this.valueOf())
   },
 
   valueOf() {
diff --git a/src/__tests__/enumeration.test.js b/src/__tests__/enumeration.test.js
index 527889d..513c98f 100644
--- a/src/__tests__/enumeration.test.js
+++ b/src/__tests__/enumeration.test.js
@@ -1,8 +1,12 @@
-import Foliage from '../Foliage'
+import Foliage   from '../Foliage'
+import Immutable from 'immutable'
+
+describe('Enumeration', function() {
 
-describe('Foliage', function() {
   let array = [1, 2, 3, 4 ]
   let object = { a: 1, b: 2, c: 3, d: 4 }
+  let map = Immutable.Map(object)
+  let list = Immutable.Set(array)
 
   let tests = new Foliage([
     [ 'map',    (i => i + 1) ],
@@ -31,6 +35,20 @@ describe('Foliage', function() {
         plant[method](...args).should.eql(expected)
       })
 
+      it ('works at the root level with maps', function() {
+        let plant    = new Foliage(map)
+        let expected = plant.values()[method](...args)
+
+        plant[method](...args).should.eql(expected)
+      })
+
+      it ('works at the root level with sets', function() {
+        let plant    = new Foliage(map)
+        let expected = plant.values()[method](...args)
+
+        plant[method](...args).should.eql(expected)
+      })
+
       it ('works at a sub-level with arrays', function() {
         let plant    = new Foliage({ body: array })
         let query    = plant.refine('body')
@@ -47,6 +65,22 @@ describe('Foliage', function() {
         query[method](...args).should.eql(expected)
       })
 
+      it ('works at a sub-level with sets', function() {
+        let plant    = new Foliage({ body: set })
+        let query    = plant.refine('body')
+        let expected = array[method](...args)
+
+        query[method](...args).should.eql(expected)
+      })
+
+      it ('works at a sub-level level with maps', function() {
+        let plant    = new Foliage({ body : map })
+        let query    = plant.refine('body')
+        let expected = query.values()[method](...args)
+
+        query[method](...args).should.eql(expected)
+      })
+
     })
   })
 
diff --git a/src/__tests__/keys.test.js b/src/__tests__/keys.test.js
new file mode 100644
index 0000000..ef12305
--- /dev/null
+++ b/src/__tests__/keys.test.js
@@ -0,0 +1,23 @@
+import keys from '../keys'
+import { Map, List } from 'immutable'
+
+describe.only('Keys', function() {
+
+  it ('works for objects', function() {
+    keys({ a: 1, b: 2, c: 3 }).should.eql(['a', 'b', 'c'])
+  })
+
+  it ('works for arrays', function() {
+    keys([ 'a', 'b', 'c' ]).should.eql([ '0', '1', '2' ])
+  })
+
+  it.only ('works for maps', function() {
+    let sample = Map({ a: 1, b: 2, c: 3 })
+    keys(sample).should.eql([ 'a', 'b', 'c'])
+  })
+
+  it ('works for lists', function() {
+    keys(List([1, 2, 3])).should.eql([0, 1, 2])
+  })
+
+})
diff --git a/src/__tests__/values.test.js b/src/__tests__/values.test.js
new file mode 100644
index 0000000..2c47951
--- /dev/null
+++ b/src/__tests__/values.test.js
@@ -0,0 +1,23 @@
+import values from '../values'
+import { Map, Set } from 'immutable'
+
+describe('Values', function() {
+
+  it ('works for objects', function() {
+    values({ a: 1, b: 2, c: 3 }).should.eql([1,2,3])
+  })
+
+  it ('works for arrays', function() {
+    values([ 1, 2, 3 ]).should.eql([1,2,3])
+  })
+
+  it ('works for maps', function() {
+    let sample = Map({ a: 1, b: 2, c: 3 })
+    values(sample).should.eql([ 1, 2, 3])
+  })
+
+  it ('works for sets', function() {
+    values(Set([1,2,3])).should.eql([1,2,3])
+  })
+
+})
diff --git a/src/keys.js b/src/keys.js
new file mode 100644
index 0000000..0d2ed56
--- /dev/null
+++ b/src/keys.js
@@ -0,0 +1,6 @@
+let isImmutable = require('./isImmutable')
+
+module.exports = function(obj) {
+  return isImmutable(obj) ? obj.map((value, key) => key).toArray()
+                          : Object.keys(obj || {})
+}
diff --git a/src/values.js b/src/values.js
new file mode 100644
index 0000000..ca13172
--- /dev/null
+++ b/src/values.js
@@ -0,0 +1,9 @@
+let get         = require('./get')
+let isImmutable = require('./isImmutable')
+let keys        = require('./keys')
+
+module.exports = function(obj) {
+  // An anonymous function is used here instead of calling
+  // `get` directly because there is no fallback value.
+  return keys(obj).map(key => get(obj, [ key ]))
+}